A second formulation of Dolphin Bay’s new generation Permacure ACQ wood preservative, regarded as a “green” option, has been registered with the Department of Agriculture, Forestry and Fisheries.
Following registration of Permacure ACQ 223 two years ago, registration of Permacure ACQ 224 offers customers a wider choice and the latest formulation, says Dolphin Bay MD Bertus Coetzee. Dolphin Bay has introduced Permacure ACQ (Ammonium Copper Quaternary) as an alternative to its widely used Permacure CCA (Chromated Copper Arsenate) wood preservative. The company is the only manufacturer of ACQ and only one of two manufacturers of CCA in Africa.ACQ has been developed by the American timber industry, working in collaboration with the US Environmental Protection Agency (EPA), as an alternative product for consumers with concerns over the use of arsenic and chromium in CCA. The EPA, however, did not conclude that CCA-treated wood structures posed an unacceptable risk, and CCA continues to be one of the world’s most popular preservatives.Dolphin Bay has developed Permacure ACQ 223 and 224 according to American Wood Preservative Association (AWPA) specifications. Permacure ACQ 223 complies with AWPA Type C specification and Permacure 224 with AWPA Type D specification.Permacure ACQ 223 has two active ingredients: copper and alkyldimethyl benzammonium chloride (ADBAC). Permacure ACQ 224 has the active ingredients copper and didecyldimethylammonium chloride (DDAC).The copper in each brand functions as a bactericide and fungicide, just as in Permacure CCA, allowing the treated wood to be resistant to biological attack. The pressure impregnation of the bivalent copper into timber allows the preservative to bond to the cellulose and hemicellulose within the wood.Permacure 223 has better efficacy for structural timber while Permacure 224 has better efficacy for timber with in-ground contact. However, Permacure ACQ 223 and 224 can be used for both types of timber. The application method of Permacure 223 and 224 is the same as for Permacure CCA.Registration of Permacure ACQ 224 means the product can now be sold legally and that its specifications can be included in South African National Standards.In addition to providing customers with a wider choice, the registration of Permacure ACQ 224 will also enable them to broaden export opportunities for treated timber, says Coetzee.New markets available to timber treatment companies, suggests Bertus, include:• North America, Europe and countries like Japan where many customers have a strong preference for ACQ-treated timber because they consider it to be more environmentally-friendly and sustainable;• African countries such as Cameroon and Mauritius where timber preservative treatment is not permitted but importation of treated wood is allowed; and• South African consumers who view the use of ACQ-treated timber as an opportunity to enhance their “green” credentials.